[NP] add http resources sub-service (#61797)

* add HttpResources basic implementation

* expose http resources to plugins

* add mocks

* move http resources to a separate service

* hide rendering service

* adopt internal types

* expose HttpResources service to plugins

* update platform mocks

* plugins start using HttpResources API

* remove RenderingServiceSetup export

* RenderingServiceSetup --> InternalRenderingServiceSetup

* improve types

* remove httpRespources leftovers from http service

* remove rendering types from RequestHanlderContext

* fix security plugin tests

* add unit tests for httpResources service

* add unit tests

* remove outdated cache-control header

* restructure http resources service

* merge getUiPlugins and discover

* static route declaration shouldnt require auth & validate

* update docs

* use HttpResources service instad of rendering

* address comments

* update docs

* roll back unnecessary changes

* use getVars for rendering

* dont pass app. it is not public API

* remove static registers

* update migration guide

docs/development/core/server/kibana-plugin-core-server.coresetup.http.md

@@ -9,5 +9,7 @@
 <b>Signature:</b>
 
 ```typescript
-http: HttpServiceSetup;
+http: HttpServiceSetup & {
+        resources: HttpResources;
+    };
 ```

docs/development/core/server/kibana-plugin-core-server.coresetup.md

@@ -20,7 +20,7 @@ export interface CoreSetup<TPluginsStart extends object = object, TStart = unkno
 |  [context](./kibana-plugin-core-server.coresetup.context.md) | <code>ContextSetup</code> | [ContextSetup](./kibana-plugin-core-server.contextsetup.md) |
 |  [elasticsearch](./kibana-plugin-core-server.coresetup.elasticsearch.md) | <code>ElasticsearchServiceSetup</code> | [ElasticsearchServiceSetup](./kibana-plugin-core-server.elasticsearchservicesetup.md) |
 |  [getStartServices](./kibana-plugin-core-server.coresetup.getstartservices.md) | <code>StartServicesAccessor&lt;TPluginsStart, TStart&gt;</code> | [StartServicesAccessor](./kibana-plugin-core-server.startservicesaccessor.md) |
-|  [http](./kibana-plugin-core-server.coresetup.http.md) | <code>HttpServiceSetup</code> | [HttpServiceSetup](./kibana-plugin-core-server.httpservicesetup.md) |
+|  [http](./kibana-plugin-core-server.coresetup.http.md) | <code>HttpServiceSetup &amp; {</code><br/><code>        resources: HttpResources;</code><br/><code>    }</code> | [HttpServiceSetup](./kibana-plugin-core-server.httpservicesetup.md) |
 |  [metrics](./kibana-plugin-core-server.coresetup.metrics.md) | <code>MetricsServiceSetup</code> | [MetricsServiceSetup](./kibana-plugin-core-server.metricsservicesetup.md) |
 |  [savedObjects](./kibana-plugin-core-server.coresetup.savedobjects.md) | <code>SavedObjectsServiceSetup</code> | [SavedObjectsServiceSetup](./kibana-plugin-core-server.savedobjectsservicesetup.md) |
 |  [status](./kibana-plugin-core-server.coresetup.status.md) | <code>StatusServiceSetup</code> | [StatusServiceSetup](./kibana-plugin-core-server.statusservicesetup.md) |

docs/development/core/server/kibana-plugin-core-server.httpresources.md

@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-core-server](./kibana-plugin-core-server.md) &gt; [HttpResources](./kibana-plugin-core-server.httpresources.md)
+
+## HttpResources interface
+
+HttpResources service is responsible for serving static &amp; dynamic assets for Kibana application via HTTP. Provides API allowing plug-ins to respond with: - a pre-configured HTML page bootstrapping Kibana client app - custom HTML page - custom JS script file.
+
+<b>Signature:</b>
+
+```typescript
+export interface HttpResources 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [register](./kibana-plugin-core-server.httpresources.register.md) | <code>&lt;P, Q, B&gt;(route: RouteConfig&lt;P, Q, B, 'get'&gt;, handler: HttpResourcesRequestHandler&lt;P, Q, B&gt;) =&gt; void</code> | To register a route handler executing passed function to form response. |
+

docs/development/core/server/kibana-plugin-core-server.httpresources.register.md

@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-core-server](./kibana-plugin-core-server.md) &gt; [HttpResources](./kibana-plugin-core-server.httpresources.md) &gt; [register](./kibana-plugin-core-server.httpresources.register.md)
+
+## HttpResources.register property
+
+To register a route handler executing passed function to form response.
+
+<b>Signature:</b>
+
+```typescript
+register: <P, Q, B>(route: RouteConfig<P, Q, B, 'get'>, handler: HttpResourcesRequestHandler<P, Q, B>) => void;
+```

docs/development/core/server/kibana-plugin-core-server.httpresourcesrenderoptions.headers.md

@@ -0,0 +1,18 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-core-server](./kibana-plugin-core-server.md) &gt; [HttpResourcesRenderOptions](./kibana-plugin-core-server.httpresourcesrenderoptions.md) &gt; [headers](./kibana-plugin-core-server.httpresourcesrenderoptions.headers.md)
+
+## HttpResourcesRenderOptions.headers property
+
+HTTP Headers with additional information about response.
+
+<b>Signature:</b>
+
+```typescript
+headers?: ResponseHeaders;
+```
+
+## Remarks
+
+All HTML pages are already pre-configured with `content-security-policy` header that cannot be overridden.
+

docs/development/core/server/kibana-plugin-core-server.httpresourcesrenderoptions.md

@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-core-server](./kibana-plugin-core-server.md) &gt; [HttpResourcesRenderOptions](./kibana-plugin-core-server.httpresourcesrenderoptions.md)
+
+## HttpResourcesRenderOptions interface
+
+Allows to configure HTTP response parameters
+
+<b>Signature:</b>
+
+```typescript
+export interface HttpResourcesRenderOptions 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [headers](./kibana-plugin-core-server.httpresourcesrenderoptions.headers.md) | <code>ResponseHeaders</code> | HTTP Headers with additional information about response. |
+

docs/development/core/server/kibana-plugin-core-server.httpresourcesrequesthandler.md

@@ -0,0 +1,18 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-core-server](./kibana-plugin-core-server.md) &gt; [HttpResourcesRequestHandler](./kibana-plugin-core-server.httpresourcesrequesthandler.md)
+
+## HttpResourcesRequestHandler type
+
+Extended version of [RequestHandler](./kibana-plugin-core-server.requesthandler.md) having access to [HttpResourcesServiceToolkit](./kibana-plugin-core-server.httpresourcesservicetoolkit.md) to respond with HTML or JS resources.
+
+<b>Signature:</b>
+
+```typescript
+export declare type HttpResourcesRequestHandler<P = unknown, Q = unknown, B = unknown> = RequestHandler<P, Q, B, 'get', KibanaResponseFactory & HttpResourcesServiceToolkit>;
+```
+
+## Example
+
+\`\`\`<!-- -->typescript httpResources.register(<!-- -->{ path: '/login', validate: { params: schema.object(<!-- -->{ id: schema.string() }<!-- -->), }<!-- -->, }<!-- -->, async (context, request, response) =<!-- -->&gt; { //.. return response.renderCoreApp(); }<!-- -->);
+

docs/development/core/server/kibana-plugin-core-server.httpresourcesresponseoptions.md

@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-core-server](./kibana-plugin-core-server.md) &gt; [HttpResourcesResponseOptions](./kibana-plugin-core-server.httpresourcesresponseoptions.md)
+
+## HttpResourcesResponseOptions type
+
+HTTP Resources response parameters
+
+<b>Signature:</b>
+
+```typescript
+export declare type HttpResourcesResponseOptions = HttpResponseOptions;
+```

docs/development/core/server/kibana-plugin-core-server.httpresourcesservicetoolkit.md

@@ -0,0 +1,23 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-core-server](./kibana-plugin-core-server.md) &gt; [HttpResourcesServiceToolkit](./kibana-plugin-core-server.httpresourcesservicetoolkit.md)
+
+## HttpResourcesServiceToolkit interface
+
+Extended set of [KibanaResponseFactory](./kibana-plugin-core-server.kibanaresponsefactory.md) helpers used to respond with HTML or JS resource.
+
+<b>Signature:</b>
+
+```typescript
+export interface HttpResourcesServiceToolkit 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [renderAnonymousCoreApp](./kibana-plugin-core-server.httpresourcesservicetoolkit.renderanonymouscoreapp.md) | <code>(options?: HttpResourcesRenderOptions) =&gt; Promise&lt;IKibanaResponse&gt;</code> | To respond with HTML page bootstrapping Kibana application without retrieving user-specific information. |
+|  [renderCoreApp](./kibana-plugin-core-server.httpresourcesservicetoolkit.rendercoreapp.md) | <code>(options?: HttpResourcesRenderOptions) =&gt; Promise&lt;IKibanaResponse&gt;</code> | To respond with HTML page bootstrapping Kibana application. |
+|  [renderHtml](./kibana-plugin-core-server.httpresourcesservicetoolkit.renderhtml.md) | <code>(options: HttpResourcesResponseOptions) =&gt; IKibanaResponse</code> | To respond with a custom HTML page. |
+|  [renderJs](./kibana-plugin-core-server.httpresourcesservicetoolkit.renderjs.md) | <code>(options: HttpResourcesResponseOptions) =&gt; IKibanaResponse</code> | To respond with a custom JS script file. |
+

docs/development/core/server/kibana-plugin-core-server.httpresourcesservicetoolkit.renderanonymouscoreapp.md

@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-core-server](./kibana-plugin-core-server.md) &gt; [HttpResourcesServiceToolkit](./kibana-plugin-core-server.httpresourcesservicetoolkit.md) &gt; [renderAnonymousCoreApp](./kibana-plugin-core-server.httpresourcesservicetoolkit.renderanonymouscoreapp.md)
+
+## HttpResourcesServiceToolkit.renderAnonymousCoreApp property
+
+To respond with HTML page bootstrapping Kibana application without retrieving user-specific information.
+
+<b>Signature:</b>
+
+```typescript
+renderAnonymousCoreApp: (options?: HttpResourcesRenderOptions) => Promise<IKibanaResponse>;
+```

docs/development/core/server/kibana-plugin-core-server.httpresourcesservicetoolkit.rendercoreapp.md

@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-core-server](./kibana-plugin-core-server.md) &gt; [HttpResourcesServiceToolkit](./kibana-plugin-core-server.httpresourcesservicetoolkit.md) &gt; [renderCoreApp](./kibana-plugin-core-server.httpresourcesservicetoolkit.rendercoreapp.md)
+
+## HttpResourcesServiceToolkit.renderCoreApp property
+
+To respond with HTML page bootstrapping Kibana application.
+
+<b>Signature:</b>
+
+```typescript
+renderCoreApp: (options?: HttpResourcesRenderOptions) => Promise<IKibanaResponse>;
+```

docs/development/core/server/kibana-plugin-core-server.httpresourcesservicetoolkit.renderhtml.md

@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-core-server](./kibana-plugin-core-server.md) &gt; [HttpResourcesServiceToolkit](./kibana-plugin-core-server.httpresourcesservicetoolkit.md) &gt; [renderHtml](./kibana-plugin-core-server.httpresourcesservicetoolkit.renderhtml.md)
+
+## HttpResourcesServiceToolkit.renderHtml property
+
+To respond with a custom HTML page.
+
+<b>Signature:</b>
+
+```typescript
+renderHtml: (options: HttpResourcesResponseOptions) => IKibanaResponse;
+```

docs/development/core/server/kibana-plugin-core-server.httpresourcesservicetoolkit.renderjs.md

@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-core-server](./kibana-plugin-core-server.md) &gt; [HttpResourcesServiceToolkit](./kibana-plugin-core-server.httpresourcesservicetoolkit.md) &gt; [renderJs](./kibana-plugin-core-server.httpresourcesservicetoolkit.renderjs.md)
+
+## HttpResourcesServiceToolkit.renderJs property
+
+To respond with a custom JS script file.
+
+<b>Signature:</b>
+
+```typescript
+renderJs: (options: HttpResourcesResponseOptions) => IKibanaResponse;
+```

docs/development/core/server/kibana-plugin-core-server.irouter.handlelegacyerrors.md

@@ -9,5 +9,5 @@ Wrap a router handler to catch and converts legacy boom errors to proper custom
 <b>Signature:</b>
 
 ```typescript
-handleLegacyErrors: <P, Q, B>(handler: RequestHandler<P, Q, B>) => RequestHandler<P, Q, B>;
+handleLegacyErrors: RequestHandlerWrapper;
 ```

docs/development/core/server/kibana-plugin-core-server.irouter.md

@@ -18,7 +18,7 @@ export interface IRouter
 |  --- | --- | --- |
 |  [delete](./kibana-plugin-core-server.irouter.delete.md) | <code>RouteRegistrar&lt;'delete'&gt;</code> | Register a route handler for <code>DELETE</code> request. |
 |  [get](./kibana-plugin-core-server.irouter.get.md) | <code>RouteRegistrar&lt;'get'&gt;</code> | Register a route handler for <code>GET</code> request. |
-|  [handleLegacyErrors](./kibana-plugin-core-server.irouter.handlelegacyerrors.md) | <code>&lt;P, Q, B&gt;(handler: RequestHandler&lt;P, Q, B&gt;) =&gt; RequestHandler&lt;P, Q, B&gt;</code> | Wrap a router handler to catch and converts legacy boom errors to proper custom errors. |
+|  [handleLegacyErrors](./kibana-plugin-core-server.irouter.handlelegacyerrors.md) | <code>RequestHandlerWrapper</code> | Wrap a router handler to catch and converts legacy boom errors to proper custom errors. |
 |  [patch](./kibana-plugin-core-server.irouter.patch.md) | <code>RouteRegistrar&lt;'patch'&gt;</code> | Register a route handler for <code>PATCH</code> request. |
 |  [post](./kibana-plugin-core-server.irouter.post.md) | <code>RouteRegistrar&lt;'post'&gt;</code> | Register a route handler for <code>POST</code> request. |
 |  [put](./kibana-plugin-core-server.irouter.put.md) | <code>RouteRegistrar&lt;'put'&gt;</code> | Register a route handler for <code>PUT</code> request. |

docs/development/core/server/kibana-plugin-core-server.legacyservicesetupdeps.md

@@ -20,4 +20,5 @@ export interface LegacyServiceSetupDeps
 |  --- | --- | --- |
 |  [core](./kibana-plugin-core-server.legacyservicesetupdeps.core.md) | <code>LegacyCoreSetup</code> |  |
 |  [plugins](./kibana-plugin-core-server.legacyservicesetupdeps.plugins.md) | <code>Record&lt;string, unknown&gt;</code> |  |
+|  [uiPlugins](./kibana-plugin-core-server.legacyservicesetupdeps.uiplugins.md) | <code>UiPlugins</code> |  |
 

docs/development/core/server/kibana-plugin-core-server.legacyservicesetupdeps.uiplugins.md

@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-core-server](./kibana-plugin-core-server.md) &gt; [LegacyServiceSetupDeps](./kibana-plugin-core-server.legacyservicesetupdeps.md) &gt; [uiPlugins](./kibana-plugin-core-server.legacyservicesetupdeps.uiplugins.md)
+
+## LegacyServiceSetupDeps.uiPlugins property
+
+<b>Signature:</b>
+
+```typescript
+uiPlugins: UiPlugins;
+```